Image forming device having a conductive member with separation needles

Abstract

A plurality of separation needles are arranged downstream from a transfer roller in the sheet transport direction along a direction which is orthogonal to the sheet transport direction, and when a separation voltage is applied to the separation needles, an electrical discharge occurs between the photosensitive drum and the separation needles, and a sheet which has been charged by the transfer roller has static charge eliminated and is separated from the photosensitive drum. Furthermore, a transport unit established downstream from the separation needles in the sheet transport direction has a plurality of transport plates which guide the transport of the sheet, and a grounding plate which is located between these transport plates, and the grounding plate is connected to the grounding unit of the device body such that the grounding plate can be seen without interference from the tip end of the separation needles.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an image forming device such as a copier, printer, or fax machine, and in further detail relates to an image forming device which can easily eliminate static electricity and separate a sheet like recording medium, onto which a toner image has been transferred, from an image supporter.[0003]2. Background Information[0004]Generally, in image forming devices such as electrophotographic copiers, printers, and fax machines, a toner image is formed or transferred to an image supporter such as a photosensitive drum or an intermediate transfer medium, and then the toner image which has been formed or transferred to the surface of the image supporter is transferred to a sheet like recording medium (such as copy paper or a plastic film). Next, this recording medium is separated from the surface of the image supporter by separating means, and then the recording medium which has been separated is se...

AI Technical Summary

Benefits of technology

This solution enhances discharge efficiency, stabilizes discharge voltage, prevents dielectric breakdown, and improves separation reliability, reducing the risk of paper jams and maintaining image quality by ensuring consistent corona discharge and reduced electrical interference.

Problems solved by technology

Furthermore, if the separation voltage is increased in order to prevent poor separation of the recording medium, there is a possibility that dielectric breakdown to the photosensitive drum will occur if an amorphous silicon (A-Si) photosensitive drum is used, thus causing image defects.

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